[Asterisk-Users] start_pri: Unable to open D-channel 24 (No suchdevice or address)

[Henry Devito]

>> Are you sure you are doing the right sequence of buttons.  If you 
>> have a call coming in you must flash then * 0.  the flash button 
>> flashes the PBX and * 0 flashes the CO.

> Yes just tried it again. Using the fxo I dialled a sip phone on the 
> network, then I tried to send a flash and then *0 and it refuses to 
> give me a dialtone. I just hear lots of beeping and I stay connected 
> and don't get a dialtone. I also can't see anything showing up on the
console.


Everything looks ok in your Zapata.conf.  when I load your config on my
machine I can do 3 way calls and answer call waiting.  I'm thinking it may
be a problem in the extensions.conf.  Can you post what you have in the
extensions.conf for the extension (SIP phone) you are calling from the PSTN.